MESON Chess Problem Database
Problem Display
PID: 38285 (1q4r1/b4RN1/4nB2/8/Q1pNpk1P/5P2/3P3P/3B1RKn w - - 0 1)
Rukhlis, Efim Naumovich
2nd Prize, Polski Zwiazek Problemistow, 1947
#2
12 + 8
| 3105 | FIDE Album (1945-1955) | 1964 |
| 133 | The Problemist Supplement | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Bg5#
- 1...Rxg7+
- 2.Bxg7#
- 1...Rc8
- 2.Sh5#
- 2.Sxe6#
- 1...Rd8
- 2.Sh5#
- 2.Sxe6#
- 1...Re8
- 2.Sh5#
- 1...Rf8
- 2.Sh5#
- 2.Sxe6#
- 1...Rh8
- 2.Sxe6#
- 1...Bxd4+
- 2.Bxd4#
- 1...Sf2
- 2.Sxe6#
- 1...Sg3
- 2.Sxe6#
- 1...Sxd4
- 2.Bxd4#
- 1...Sc5
- 2.Se2#
- 1...Sg5
- 2.Sh5#
- 1...Sxg7
- 2.Bxg7#
- 1...e3
- 2.Se2#
- 2.Sxe6#
- 1...Qe5
- Tries
- 1.Kxh1?
- threat
- 2.Se2#
- 2.Sdxe6#
- 2.Sh5#
- 2.Sgxe6#
- 1...Rxg7
- 2.Bxg7#
- 1...Bxd4
- 2.Bxd4#
- 1...Sxd4
- 2.Bxd4#
- 1...Sxg7
- 2.Bxg7#
- 1...Qe5
- 2.Se2#
- 2.Bg5#
- 1...Qd6
- 2.Se2#
- 2.Sh5#
- 1...Qb5
- 2.Se2#
- 2.Sdxe6#
- 2.Sgxe6#
- 1...Qb6
- 2.Se2#
- 2.Sh5#
- 1...Qc8
- 2.Se2#
- 2.Sh5#
- 1...Qe8
- 2.Se2#
- 2.Sh5#
- 1...Re8
- 2.Se2#
- 2.Sh5#
- 1...Rh8
- 2.Se2#
- 2.Sdxe6#
- 2.Sgxe6#
- 1...Sc5
- 2.Se2#
- 2.Sh5#
- 1...Sg5
- 2.Se2#
- 2.Sh5#
- 1...Sc7
- 2.Se2#
- 2.Sh5#
- 1...Sd8
- 2.Se2#
- 2.Sh5#
- 1...Sf8
- 2.Se2#
- 2.Sh5#
- 1...exf3!
- threat
- 1.Kg2?
- threat
- 2.Se2#
- 2.Sxe6#
- 1...Rxg7+
- 2.Bxg7#
- 1...Bxd4
- 2.Bxd4#
- 1...Sxd4
- 2.Bxd4#
- 1...Sxg7
- 2.Bxg7#
- 1...Qe5
- 2.Se2#
- 2.Bg5#
- 1...Qd6
- 2.Se2#
- 1...Qb6
- 2.Se2#
- 1...Qc8
- 2.Se2#
- 1...Qe8
- 2.Se2#
- 1...Re8
- 2.Se2#
- 2.Sh5#
- 1...Sg3
- 2.Sdxe6#
- 2.Sgxe6#
- 2.hxg3#
- 1...Sc5
- 2.Se2#
- 1...Sg5
- 2.Se2#
- 2.Sh5#
- 1...Sc7
- 2.Se2#
- 1...Sd8
- 2.Se2#
- 1...Sf8
- 2.Se2#
- 1...exf3+!
- threat
- 1.Rf2?
- threat
- 2.Se2#
- 2.Sxe6#
- 1...Rxg7+
- 2.Bxg7#
- 1...Bxd4
- 2.Bxd4#
- 1...Sxf2
- 2.Sxe6#
- 1...Sxd4
- 2.Bxd4#
- 1...Sxg7
- 2.Bxg7#
- 1...Qd6
- 2.Se2#
- 1...Qe5
- 2.Se2#
- 2.Bg5#
- 1...Qb6
- 2.Se2#
- 1...Qc8
- 2.Se2#
- 1...Qe8
- 2.Se2#
- 1...Re8
- 2.Se2#
- 2.Sh5#
- 1...Sg3
- 2.Sdxe6#
- 2.Sgxe6#
- 1...Sc5
- 2.Se2#
- 1...Sg5
- 2.Se2#
- 2.Sh5#
- 1...Sc7
- 2.Se2#
- 1...Sd8
- 2.Se2#
- 1...Sf8
- 2.Se2#
- 1...exf3!
- threat
- 1.Qa3?
- threat
- 2.Qe3#
- 1...Rxg7+
- 2.Bxg7#
- 1...Bxd4+
- 2.Bxd4#
- 1...exf3
- 2.Qxf3#
- 1...Qb3
- 2.Qd6#
- 1...e3
- 2.Se2#
- 2.Sxe6#
- 2.Qxe3#
- 2.dxe3#
- 1...c3!
- threat
- 1.Kxh1?
- Keys
- 1.Qc6!
- threat
- 2.Qxe4#
- 1...Rxg7+
- 2.Bxg7#
- 1...Bxd4+
- 2.Bxd4#
- 1...exf3
- 2.Qxf3#
- 1...Qe5
- 2.Bg5#
- 1...Qb1
- 2.Qd6#
- 1...Qb7
- 2.Qd6#
- 1...Qa8
- 2.Qd6#
- 1...Sf2
- 2.Sxe6#
- 1...Sg3
- 2.Sxe6#
- 1...Sc5
- 2.Se2#
- 1...Sg5
- 2.Sh5#
- 1...e3
- 2.Se2#
- 2.Sxe6#
- 2.Qe4#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- Q(g);SBLOCK::R(K)+B(J),DCHECK
- R(h);CHECK,OGATE,XS(L)::R(K)+B(J),XR(h)
- R(h);::S(L)
- R(h);::S(L),XS(e)
- B(f);CHECK,OGATE,P_PINS(L),XS(H)::R(K)+B(J),XB(f)
- S(a);N_PINS(H),P_PINS(L)::S(H),XS(e)
- S(a);::S(L),XS(e)
- S(e);OGATE,P_PINS(L),XS(H)::R(K)+B(J),XS(e)
- S(e);N_PINS(H),P_PINS(L)::S(H)
- S(e);::S(L)
- S(e);OGATE,XS(L)::R(K)+B(J),XS(e)
- Tries
- Try
- K(C);N_SPINS(H),P-FLIGHT,XS(a)
- Threat
- DUALS(4)
- Vars
- R(h);OGATE,XS(L)::R(K)+B(J),XR(h)
- B(f);OGATE,XS(H)::R(K)+B(J),XB(f)
- S(e);OGATE,XS(H)::R(K)+B(J),XS(e)
- S(e);OGATE,XS(L)::R(K)+B(J),XS(e)
- Refutation
- P(c);P_SPINP(c),XP(F)
- Try
- K(C);N_SPINS(H),P-FLIGHT,P_SPINS(L)
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,OGATE,XS(L)::R(K)+B(J),XR(h)
- B(f);OGATE,XS(H)::R(K)+B(J),XB(f)
- S(e);OGATE,XS(H)::R(K)+B(J),XS(e)
- S(e);OGATE,XS(L)::R(K)+B(J),XS(e)
- Q(g);::S(H)
- S(e);::S(H)
- Refutation
- P(c);CHECK,P_SPINP(c),XP(F)
- Try
- R(B);N_SPINS(H),P_SPINS(L)
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,OGATE,XS(L)::R(K)+B(J),XR(h)
- B(f);OGATE,P_PINR(B),XS(H)::R(K)+B(J),XB(f)
- S(a);XR(B)::S(H),XS(e)
- S(e);OGATE,XS(H)::R(K)+B(J),XS(e)
- S(e);OGATE,XS(L)::R(K)+B(J),XS(e)
- Q(g);::S(H)
- S(e);::S(H)
- Refutation
- P(c);P_SPINP(c),XP(F)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- R(h);CHECK,OGATE,XS(L)::R(K)+B(J),XR(h)
- B(f);CHECK,OGATE,P_PINS(L),XS(H)::R(K)+B(J),XB(f)
- P(c);OGATE,P_SPINP(c),XP(F)::QAR1(G),XP(c)
- Q(g);N_GUARD::QAB(G)
- Refutation
- P(b);
- Try
- Actual
- Q(G);
- Threat
- QAR1(G),XP(c)
- Vars
- R(h);CHECK,OGATE,XS(L)::R(K)+B(J),XR(h)
- B(f);CHECK,OGATE,P_PINS(L),XS(H)::R(K)+B(J),XB(f)
- P(c);OGATE,P_SPINP(c),XP(F)::QAR1(G),XP(c)
- Q(g);SBLOCK::R(K)+B(J),DCHECK
- Q(g);N_GUARD::QAB(G)
- S(a);N_PINS(H),P_PINS(L)::S(H),XS(e)
- S(a);::S(L),XS(e)
- S(e);N_PINS(H),P_PINS(L)::S(H)
- S(e);::S(L)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).